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CVE-2023-39780

ASUS RT-AX55 Routers OS Command Injection

8.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 39.5%
  1. Published11 Sept 2023
  2. Added to CISA KEV2 Jun 2025
  3. Remediation due23 Jun 2025
Actively exploited (CISA KEV)

ASUS RT-AX55 devices contain an OS command injection vulnerability that could allow a remote, authenticated attacker to execute arbitrary commands. As represented by CVE-2023-41346.

Added to KEV: 2 Jun 2025Federal remediation due: 23 Jun 2025

Description

On ASUS RT-AX55 3.0.0.4.386.51598 devices, authenticated attackers can perform OS command injection via the /start_apply.htm qos_bw_rulelist parameter. NOTE: for the similar "token-generated module" issue, see CVE-2023-41345; for the similar "token-refresh module" issue, see CVE-2023-41346; for the similar "check token module" issue, see CVE-2023-41347; and for the similar "code-authentication module" issue, see CVE-2023-41348.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

ASUS Rt-ax55 Firmware3.0.0.4.386.51598

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-39780 being actively exploited?

Yes. CVE-2023-39780 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2 Jun 2025.

How severe is CVE-2023-39780?

CVE-2023-39780 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 39.5% probability of exploitation.

Which products are affected by CVE-2023-39780?

Affected products include ASUS Rt-ax55 Firmware.

How do I fix CVE-2023-39780?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-39780 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.